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      email: tony@lathes.co.uk
      Home   Machine Tool Archive   Machine-tools Sale & Wanted
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      Socit?Genevoise d'Instruments de Physique

      Operation & Maintenance Manuals are available for most SIP Jig Borers

      SIP Home   Hydroptic 6A & 7A    Jig Borer 1-H  Jig Borer 2P   Tooling Cabinet   
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      Accessories   Jig Borers 1920s 2C & No. 3   Other Early SIP Products

      SIP No. 2 lathe 80 mm centre height and 200 mm between centres. Not an ordinary high-precision lathe, but one specially constructed for the automatic correction, checking and measuring very high quality screws, thread gauges and taps, etc. It was fitted with an automatic leadscrew corrector and equipment that allowed it to compensate for errors developed, for example, during hardening of the parts being tested..  Like that on an ordinary G.Boley precision lathe, the leadscrew ran down the centre line of the bed and was completely protected from the wearing effects of swarf and dirt.
      This SIP lathe, and the one shown below, make an interesting comparison with that made by Bryant Symons in England.

      SIP No. 4 special lathe with a 135 mm centre height and 500 mm between centres. A larger version, with a 155 mm centre height, was also listed. Like the Bryant Symons lathe this SIP lathe had separate front and rear bed sections for carriage and tailstock - and may also have been fitted with an automatic forward/reverse mechanism to the carriage drive.

      SIP high-precision "Universal Circular Dividing Machine" - fitted, as were all such circular and linear machines, with corrected leadscrews and worm-wheels.

      Another version of the SIP high-precision Universal Circular Dividing machine

      Sip high-precision automatic engraving machine

      SIP high-precision Length Dividing Machine

      Sip high-precision Length Dividing Machine with duplex marking heads

      An early example of a SIP Tread Grinding Machine for external threads

      SIP Thread Grinding Machine

      email: tony@lathes.co.uk
      Home   Machine Tool Archive   Machine-tools Sale & Wanted
      Machine Tool Manuals   Catalogues   Belts   Books  Accessories

      Other SIP Machine Tools
      Socit?Genevoise d'Instruments de Physique

      Operation & Maintenance Manuals are available for most SIP Jig Borers

      SIP Home   Hydroptic 6A & 7A    Jig Borer 1-H  Jig Borer 2P   Tooling Cabinet   
      Jig Borer 3K    Jig Borer 4G   Jig Borer 5E   Jig Borer 8P   
      Accessories   Jig Borers 1920s 2C & No. 3   Other Early SIP Products

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